Friday, November 2, 2007

July 28, 2007 - There have been multiple monopole failures this year such as this Sprint/Nextel monopine that fell in California in early May.

Although some of the structure failures can be attributed to winds in excess of jurisdictional design requirements, some monopoles reportedly failed at wind speeds that should not have caused the poles to collapse.

One commonality is that numerous failures were directly above the base plate or above flange locations.

In an industry where the speed of rumors, misstatements and misunderstandings can make the highest ASCE three-second gust blush with envy, industry observers are quick to fault poor engineering, manufacturing and/or metal fatigue as the usual suspects.

Some structural engineers believe that design aspects of monopole engineering should require a closer look, and the TR14.7 TIA-222 committee agrees since they will be reviewing base plate design methodologies and weld details of the base connection on monopoles. They’ll also be investigating fatigue categories on welded joints. Their findings and recommendations will be included in Revision H of the tower standard. However, it could be a year or two until this area of concern is fully explored.

Welcome to Residents A.C.T.

Welcome!

Thank you so very much for taking the time to visit this site. Residents A.C.T. was started in order to express opposition to the proposal of a 130' cell tower & adjoining equipment facility to be located on the property of the Cranford Swim Club. The Cranford Swim Club is located at 201 County Park Drive, Cranford NJ 07016. It is directly adjacent to Lenape Park and is located across the street from Nomahegan Park.